Page 40 - lukhaup_pekny_invertebrates

GLOSSARY

adult: sexually mature pleon: the abdomen of crustaceans
albinism: without pigmentation pleopods: swimmerets, or swimming legs
antenna: large tentacle of an arthropod radula: the rasping tongue of snails
antennule: small tentacle of an arthropod rostrum: pointy appendage at the upper frontal
aquatic: living in water almost exclusively end of the carapace
benthic: adapted to life on the ground salinity: salt content of the water
carapace: hard shell covering the back, thorax and setae: bristles or hairs
head of all decapods (ten-legged crustaceans) siphon: a tube snails use to breathe through
carnivorous: meat-eating stridulation: creation of noise by rubbing body
cephalon: head parts together
cephalothorax: head and thorax of the decapods submerged: growing below the waterline
chelae: decapod claws sympatric: two or more species sharing
cuticle: skin one habitat
detritus: decaying parts of plants or animals taxonomy: the science of classifying and naming
dorsal: referring to the upper side or back living organisms according to their body form
ecdysis: moulting process telson: central appendage of the 6th pleon segment
emerged: growing above the waterline uropods: leaf-shaped appendages on the 6th pleon
endemic: only found in a limited area segment forming the tail fan together with the
exoskeleton: hard shell of the crustaceans telson
exuvia: the shell a crustacean sheds when moulting ventral: on the underside
gonopods: the legs the males use for inseminating zoea: early larval stage of crustaceans
the females
gonopores: reproductive apertures of crustaceans
herbivorous: plant-eating
juvenile: young or not sexually mature
marine: living in the sea
megalopa: final larval stage in crustaceans
morphology: outward body form
omnivorous: eating food of vegetable and
animal origin
oviparous: egg-laying
ovoviviparous (or viviparous): livebearing
parthenogenesis: “virgin birth”
pereopods: walking legs

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